Is there a built in function for rounding a double in java

Question

I want to round a double to a specific amount of decimal places in java. Is there a specific function for doing so and can this function round the double to an integer?

Answer 1

There is Math.round() that will return the rounded long value.

You can also cast a double value to a long or an int .

If you need to format the double value to a specific number of decimals then use DecimalFormat .

Answer 2

DateFormat df = new DateFormat("#.##");

The above statement can bring your double value to a specific format.

double d = Math.round(43.475);

The above statement can round your double value.